package com.atguigu.educenter.mapper;

import com.atguigu.educenter.entity.UcenterMember;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author atguigu
 * @since 2022-04-18
 */
@Mapper
public interface UcenterMemberMapper extends BaseMapper<UcenterMember> {
//多个参数在sql取值，
// 1.（@Params("aa")String day，String name，....）
    //2.用索引取值（0 = day，1=name ）一一对应
    Integer countRegisterDay(String day);
}
